TW201022415A - Liquid crystal composition and LCD device - Google Patents

Abstract

A liquid crystal composition is provided, sufficiently having at least one of the following properties: high upper-limit temperature of nematic phase, low lower-limit temperature of nematic phase, low viscosity, moderate optical anisotropic, large negative dielectric anisotropy, high resistivity, high stability to UV light and high thermal stability; or maintaining a balance between at least two of the above properties. An active matrix LCD device is also provided, having short response time, large voltage retention ratio, high contrast, long lifetime and so on. The liquid crystal composition has a negative dielectric anisotropy, and includes a specific compound having 1-pyran-2,5-diyl as a first component and another specific compound having a large negative dielectric anisotropy as a second component. The LCD device contains the liquid crystal composition.

Description

201022415 VI. Description of the Invention: [Technical Field] The present invention relates to a liquid crystal composition suitable for an active matrix (AM) device or the like, an AM device containing the same, and the like, and more particularly to a * dielectric constant Dielectric (dielectric anisotropy) is a negative liquid crystal composition and a mode of transverse electric field switching (IPS), vertical alignment (VA) or polymer suspension alignment (PSA) containing the composition. Components. [Prior Art] 液晶 Liquid crystal display elements can be classified into phase changes according to the liquid crystal operation mode (Phase

Change 'PC), twisted nematic (TN), super twisted nematic (stn), electrically controlled birefringence (ECB), optically compensated bend (〇CB), transverse electric field switching, vertical alignment And the polymer maintains the alignment mode and the like. According to the component drive, the dynamic mode can be classified into a passive matrix (PM) and an active matrix. The PM type can be classified into static and multiplex types, and the AM can be a Thin Film Transistor (TFT) or a Metal Insulator Metal (MIM). Wait. TFTs can be classified into non-aa Shi Xi and Fu Jing Zhen, and the latter can be classified into high temperature type and low temperature type according to the process. The light source can be classified into a reflection type using natural light, a penetration type using a backlight, and a semi-transmissive type using both natural light and backlight. These elements contain a liquid crystal composition having suitable characteristics having a nematic phase. In order to obtain an AM component having good general characteristics, the general characteristics of the composition must be improved. The relationship between the general characteristics of the two is summarized in Table 1 below. Composition 4 201022415 General characteristics are based on a commercially available AM component test. The temperature dependence of the nematic phase is related to the usable temperature range of the component. The upper limit temperature of the nematic phase is preferably at least 70 ° C, and the lower limit temperature is at 〇 〇. 〇The following. The viscosity of the composition is related to the component response time. It is preferable to display the dynamic image 'response time in the component. Therefore, the composition is preferably one having a small viscosity and preferably having a small viscosity at a low temperature. Table 1. General Characteristics of Compositions and AM Components

No General characteristics of the composition General characteristics of the AM element 1 Temperature range of the nematic phase 瘙 Wide range of temperature can be used 2 Viscosity is small u ' Short-term response time 3 Optical anisotropy Appropriate contrast ratio 4 Positive or negative dielectric constant Low anisotropy, high threshold voltage, low power consumption, high contrast ratio, high resistivity, high voltage holding ratio, high contrast ratio, high UV resistance and long thermal stability. 1) Shortening of the time composition of the composition into the liquid crystal cell Anisotropy (Δ«) is related to the contrast of the component. The 10 product (Awd) of the optical anisotropy of the composition and the cell gap (d) of the element is designed to maximize contrast. The appropriate product _ value depends on the type of action mode; the VA mode component is 〇.3〇~ - 〇.4〇A«n ’ in the IPS mode component is 〇 2〇~〇 s〇Ami. In this case, the composition preferably has a large optical anisotropy for an element having a small cell gap. The composition has an absolute value of dielectric anisotropy which allows the device to have a low critical voltage, low power consumption, and high contrast. Therefore, the absolute value of the dielectric anisotropy is preferably the larger. The composition has a large resistivity which allows the device to have a large voltage holding ratio and high contrast. Therefore, the composition preferably has a large electrical resistivity not only at room temperature but also a large electrical resistance at a high temperature in the initial stage.

201022415 J23U5plI rate. It is also preferred that the composition has a large electrical resistivity not only at room temperature but also a large electrical resistivity at a high temperature after long-term use. The stability of the composition to ultraviolet light and heat is related to the life of the liquid crystal display element. When the stability is high, the life of the component is long. Such characteristics are advantageous for AM elements used in liquid crystal projectors, liquid crystal televisions, and the like. The TN mode AM device uses a composition having a positive dielectric anisotropy. On the other hand, 'VA mode AM devices use a composition with negative dielectric anisotropy'. IPS mode AM devices use a composition with positive or negative dielectric anisotropy, and PSA mode AM devices use positive or A composition having a negative dielectric anisotropy. Examples of the liquid crystal composition having a negative dielectric constant anisotropy are disclosed in the following Patent Documents 1 and 2. [PRIOR ART DOCUMENT] [Patent Document 1] Japanese Patent Laid-Open Publication No. 2001-262145 (Patent Document 2): Japanese Patent Publication No. 200M15161. The preferred AM device has the following characteristics: a wide temperature range can be used. Short response time, high contrast, low threshold voltage, high voltage retention, and long life. The ideal response time is less than 1 millisecond. Therefore, the ideal characteristics of the composition are: high temperature of the nematic phase, low temperature of the nematic phase, low viscosity, appropriate optical anisotropy, positive or negative dielectric anisotropy, large resistivity, High stability and high stability to heat. SUMMARY OF THE INVENTION One object of the present invention is to provide a liquid crystal composition having at least one characteristic of the following characteristics: a high temperature of a nematic phase upper limit, a nematic phase lower limit temperature of 201022415, a large optical anisotropy, and a Negative electric anisotropy The present invention J, β, UV stability, high heat stability, and the like. The 曰 group (9)^ has a properly balanced liquid between at least two of the above characteristics: 纽. Gamma - the purpose is to have a liquid crystal display element containing this domain. Another purpose is to have small optical anisotropy or large optical omnidirectional green optics * optical anisotropy, large negative dielectric anisotropy, pair = line An element such as a minus button, and an AM element having a short response time, a large ink retention rate, a high degree of shame, a long life, and the like. The liquid crystal city of the present invention contains, as a first component, at least one compound selected from the group of the compound compounds of the formula, and at least one compound selected from the group of compounds of the formula (2) as the second component, and has Negative dielectric anisotropy. The liquid crystal display element of the present invention contains the liquid crystal composition.

(1)

Wherein R1 and R2 are independently a C 1-12 alkyl group, a C 1-12 alkoxy group, a C 2-12 alkenyl group or a C 2-12 alkenyl group in which any hydrogen is replaced by a fluorine; each ring A is independently Is 1-pyran-2,5-diyl (l-pyran-2,5-diyl), 1,4_cyclohexylene or 1,4-phenylene and at least one ring A is 1-pyridyl -2-2,5-diyl; each ring B is independently 1,4-cyclohexylene or 1,4-phenyl; each Z1 is independently a single bond, an ethyl group, a methyleneoxy group or a few Oxygen 7 201022415 ^ζ^υδριι (carb〇nyl〇xy ); m and g are independently 2 or 3. [Effects of the Invention] An advantage of the present invention is that at least one liquid crystal composition is sufficiently provided in the following characteristics: the upper limit temperature of the nematic phase is high, the lower limit temperature of the nematic phase is low, the viscosity is small, the optical anisotropy is appropriate, and the dielectric constant is It has a large negative value to the opposite polarity, a large resistivity, high stability against ultraviolet rays, and high stability against heat. One aspect of the invention is a liquid crystal composition having an appropriate balance between at least two of the above characteristics, and on the other hand, a liquid crystal display element comprising such a composition. Other aspects of the invention are compositions having suitable optical anisotropy, large negative dielectric anisotropy, high stability to ultraviolet light, etc., and having short response time, large voltage holding ratio, high contrast, and long life. And other AM components. [Embodiment] The usage of the terms in this specification is as follows. The liquid crystal composition or liquid crystal display element of the present invention may be simply referred to as "composition" or "element", respectively. The liquid crystal display element is a general term for a liquid crystal display panel and a liquid crystal display module. The "liquid hydrating compound" means a compound having a liquid crystal phase such as a nematic phase or a smectic phase or a compound having no liquid crystal phase but used as a component. The latter has, for example, a six-membered ring such as 1,4-cyclohexylene or anthracene, a 4-phenylene group which has a substructure of a rod shape. An optically active compound or a polymerizable compound is sometimes added to the composition, and even if the compounds are liquid crystalline compounds, they are classified as additives herein. At least one compound selected from the group of compounds represented by the formula (1) may be simply referred to as "compound (1)". The "compound (1)" means one compound or two or more compounds represented by the formula (1). The compounds listed in other chemical formulas are also the same. "Arbitrary" means not only the position is 201022415 32308pif, but also the number is arbitrary, but does not include the case where the number is 〇. The nematic phase upper limit temperature is sometimes simply referred to as "upper limit temperature", and the nematic phase lower limit temperature is simply referred to as "lower limit temperature". "High resistivity" means that the composition has a large electrical resistivity not only at room temperature but also at a high temperature in the initial stage, and also has a large electrical resistivity not only at room temperature but also at a high temperature after long-term use. "High voltage holding ratio" means that the element has a large voltage holding ratio not only at room temperature but also at a high temperature in the initial stage, and has a large voltage holding ratio not only at room temperature but also at a high temperature after long-term use. . When the characteristics such as optical anisotropy are described, the values obtained by the measurement methods described in the examples are used. The first component is a compound or two or more compounds. The "ratio of the first component" means the weight percentage (Wt%) of the first component relative to the total weight of the liquid crystal composition. The ratio of the second component is also the same. The proportion of the additive to be incorporated in the composition means the weight percentage (Wt%) or the parts per million by weight (ppm) of the additive relative to the total weight of the liquid crystal composition. In the chemical formula of the component compound, the R1 symbol is used for a plurality of compounds. In any of these compounds, R1 may have the same meaning or may not be the same. For example, when R1 of the compound (1) is an ethyl group, and R1 of the compound (2) is an ethyl group, R1 of the compound (1) is an ethyl group, and R1 of the compound (2) is a propyl group. This rule also applies to R2, χ1, etc. The present invention contains the following items. a liquid crystal composition comprising, as a first component, at least one compound selected from the group of compounds of the formula (1), and at least one selected from the group consisting of the compound of the compound of the formula (2) as a second component a compound having a negative dielectric anisotropy. 9 (1) 201022415

3^3U8pU

R

Wherein R1 and R2 are independently a C 1-12 alkyl group, a C 1-12 alkoxy group, a C 2-12 alkenyl group or a C 2-12 alkenyl group in which any hydrogen is replaced by a fluorine; each ring A is independently Is I-»pyran-2,5-diyl, 1,4-cyclohexylene or 1,4-phenylene, and at least one ring A is 1-«*pyran-2,5-diyl; Each ring B is independently 1,4-cyclohexylene or 1,4-phenylene; each Z1 is independently a single bond, an ethyl group, a fluorenylene group or a carbonyloxy group; m and g are independently 1, 2 or 3. [2] The liquid crystal composition according to [1], wherein the first component is at least one compound selected from the group consisting of compounds of the formulae (1-1) to (1-6).

F F R

(1-1)

(1-2) (1-3) 10 201022415 32308pit

F. F

(1-4) (1-5) (1-6) wherein R1 and R2 are independently a carbon number ;~; ^alkyl group, carbon number 12 alkoxy group, carbon number 2 to 12 alkenyl group or any hydrogen group The fluorine-substituted carbon number is 2 to 12 alkenyl groups. [3] The liquid crystal composition according to [2], wherein the first component is at least one compound selected from the group consisting of compounds of the formulae (1-1) to (1-3). [4] The liquid crystal composition according to [2], wherein the first component is at least one compound selected from the group consisting of compounds of the formulae (1-4) to (1-6). [5] The liquid crystal composition according to [2], wherein the first component is at least one compound selected from the group consisting of compounds of the formulae (M) to (1-3) and is selected from the group consisting of the formula (14) to (1-6) a mixture of at least one compound of the group of compounds described. [6] The liquid crystal composition according to any one of [1] to [5], wherein the second component is at least one compound selected from the group consisting of compounds of the formulae (2-1) to (2-2).

F. F

(2-1) (2'2) wherein R1 and R2 are independently a carbon number of 12~12 alkyl group, a carbon number of 12~12 alkoxy group, a carbon number of 2 to 12 alkenyl group or a carbon number of any hydrogen substituted by fluorine 2 to 12 alkenyl. 11

201022415 323U»pU

[7] The liquid crystal composition according to [6], wherein the second component is at least one compound selected from the group consisting of compounds of the formula (2-1). [8] The liquid crystal composition according to [6], wherein the second component is at least one compound selected from the group consisting of compounds of the formula (2-2). [9] The liquid crystal composition according to [6], wherein the second component is at least one compound selected from the group of compounds of the formula - (2-1) and a compound group selected from the group consisting of the formula (Μ) a mixture of at least one compound. [10] The liquid crystal composition according to any one of [1] to [9] wherein the ratio of the first component is 5 to 5 Å by weight to the ratio of the total weight of the liquid crystal composition. The ratio of the ingredients is 5 to 50% by weight. [11] The liquid crystal composition according to any one of [1] to [10] further comprising at least one compound selected from the group of compounds of the formula (3) as a component. Wherein 'R3 and R4 are independently a carbon number of 1 to 12 alkyl groups, a carbon number of 丨~12 alkoxy group, a carbon number of 2 to 12 alkenyl groups or a carbon number of 2 to 12 groups substituted with fluorine; each ring C And ring D is independently 1,4-cyclohexylene, 1,4-phenylene, 2-fluoro, 4, azino, 3-fluoro-1,4-phenyl or 2,5-difluoro -1,4-extension base; each Z2 is independently a single bond, an extended ethyl group or a carbonyloxy group; j is 1, 2 or 3. [12] The liquid crystal composition according to [11], wherein the third component is at least one compound selected from the group consisting of compounds of the formulae (3-1) to (3-10). 12 201022415

(3-1)

(3-2)

(3-3)

(3-4) (3-5) (3-6) (3-7)

(3-8) (3-9) (3-10) wherein R3 and R4 are independently a C 1-12 alkyl group, a C 1-12 alkoxy group, an alkenyl group having 2 to 12 carbon atoms or an arbitrary hydrogen group. The carbon number which is substituted by fluorine is 2 to 12 alkenyl groups. [13] The liquid crystal composition according to [12] wherein the third component is at least one compound selected from the group consisting of compounds of the formula (3_1). [14] The liquid crystal composition according to [12] wherein the third component is at least one compound selected from the group of compounds of the formula (3_1) and at least one selected from the group of compounds of the formula (3-4) a mixture of compounds. [15] The liquid crystal composition according to [12], wherein the third component is at least one compound selected from the group consisting of compounds of the formula (3-6) and a compound group selected from the group consisting of the formula (3-10) a mixture of at least one compound. [16] The liquid crystal composition according to [12], wherein the third component is at least one compound selected from the group of compounds of the formula (3-1), and is selected from the group of compounds of the formula (3·4) A mixture of at least one compound and at least one compound selected from the group of compounds of the formula (3-6). [17] The liquid crystal composition according to any one of [11] to [16] wherein the ratio of the third component is from 3 〇 to 7 〇 wt 〇 / 相 relative to the total weight of the liquid crystal composition. [18] The liquid crystal composition according to any one of [1] to [17] further comprising at least one compound selected from the group consisting of compounds of the formulae (4-1) to (4-2). Four ingredients.

(4-1) (4-2) wherein R1 and R2 are independently a carbon number of 1 to 12 alkyl groups, a carbon number of 12 alkoxy groups, a carbon number of 2 to 12 alkenyl groups, or a carbon number of any anthracene substituted by fluorine. ～12 妇基; each ring Ε and ring F are independently i,4-cyclohexylene or μ-phenylene; each / 3 of 201022415 is independently a single bond, an ethyl group, a methylene group or a carbonyloxy group. Each z2 is independently a bond, an ethyl or a oxy group; X1 and X2 are independently fluorine or gas; k is f or 3; l^q is independently 0, 2 or 3, but cedar 3. [19] The liquid crystal composition according to [18], wherein the eight (4 small 1) to (4-1-7) and the formula are selected from the group consisting of one compound. In the table compound group

❹

(4-1-1) (4-1-2) (4-1-3) (4-M) (4-1-5) (4-1-6) (4-1-7) (4- 2-1) 15 201022415

(4-2-2)

F F

(4-2-3) (4-2-4) wherein 'R1 and R2 are independently a carbon number i to 12 alkyl group, a carbon number i to 12 alkoxy group, a carbon number of 2 to 12 alkenyl group or an arbitrary hydrogen group Substituted carbon number 2~12 alkenyl; ring E1, ring E2, ring F1 and ring F2 are independently 1,4-cyclohexylene or i,4-phenylene; Z1 and Z3 are independently a single bond, an extended ethyl group , anthraceneoxy or carbonyloxy. [20] The liquid crystal composition according to [19], wherein the fourth component is at least one compound selected from the group consisting of compounds of the formula (4-1-1). [21] The liquid crystal composition according to [19], wherein the fourth component is at least one compound selected from the group of compounds of the formula (4-1-1) and is selected from the formula (4-1-5) A mixture of at least one compound of the group of compounds described. [22] The liquid crystal composition according to any one of [18] to [21] wherein the ratio of the fourth component is 5 to 50% by weight based on the total weight of the liquid crystal composition. [23] The liquid crystal composition according to any one of [1] to [22] wherein the upper limit temperature of the nematic phase is 70 ° C or higher, and the optical anisotropy (25 ° C) at a wavelength of 589 nm is 0.08 or more, and the dielectric anisotropy (25 ° C) at a frequency of 1 kHz is -2 or less. [24] A liquid crystal display element comprising the liquid crystal composition according to any one of [1] to [23]. 201022415 # [25] The liquid crystal display element of [24], wherein the operation mode of the liquid crystal display element is VA, IPS or PSA mode, and the sway mode is active matrix mode. The present invention includes the following items: the composition comprising the active compound, and 2) the composition further comprising an additive such as an antioxidant 'ultraviolet absorber, an antifoaming agent or the like. 3) an AM device containing the composition, 4) 3 having the composition, and having a tn, ECB, OCB, IPS, VA or PSA formula, and 5) a penetrating member containing the composition 6) Use of the composition as a nematic phase composition, and 7) use of an optically active compound as the optically active composition. The composition of the present invention is illustrated in the following order. The first is the structure of the knife-forming compound in the composition, the second is the main characteristics of the component compound and the main effects of the compound on the composition, and the third is the combination of the components of the composition, the preferred ratio of the component compounds, and the basis thereof. Fourth, a preferred form of the component compound 'five is a specific example of the component compound, six is an additive which can be incorporated into the composition, seven is a synthesis method of the component compound, and finally, the use of the composition. First, the structure of the component compound in the composition will be explained. The composition of the present invention is classified into composition A and composition B. The composition A may further contain other liquid crystal compounds, additives, impurities, and the like. The "other liquid crystal compound" is a liquid crystal compound different from the compound (1), the compound (2), the compound (4-1) and the compound (4-2). Such a compound is incorporated into the composition for the purpose of further adjusting the properties. Among other liquid crystalline compounds, the less the cyano compound is, the better the stability against heat or ultraviolet rays is, and the ratio is preferably 〇. The additives are optically active compounds, antioxidants, ultraviolet absorbers, pigments, antifoaming agents, polymerizable compounds, polymerization initiators and the like. The impurity is a compound or the like mixed in the step of synthesizing the compound of the component 17 201022415 32308pif. This compound is classified as an impurity even if it is a liquid crystalline compound. The composition B contains substantially only a compound selected from the group consisting of the compound (1), the compound, the compound (3), the compound (4-1), and the compound (4-2). The term "substantially" means that the composition may contain additives and impurities, but does not contain a liquid crystal compound different from the compounds. The composition 3 has a smaller number of components than the composition A. Composition B is superior to A in terms of cost reduction. The composition A is superior to B in that the physical properties can be further adjusted by mixing into other liquid crystalline compounds. Next, the main characteristics of the component compound and the main effects of the compound on the properties of the composition will be explained. The main characteristics of the constituents are summarized in Table 2 in accordance with the effects of the present invention. In the symbols of Table 2, L means large or south ' Μ means medium degree s means small or low. The symbols L, M, and § are classified according to a qualitative comparison between the constituent compounds, and Q indicates that the value is close to zero. Table 2. Characteristics of the compound

When the compound of the aged compound is mixed with the silk, New Zealand has the following effects. The absolute value of the extractability of the compound (1) can increase the dielectric anisotropy of the dielectric constant. Compound (7) can be lowered _ degree 201022415 J23U8pit or increase the upper limit temperature. Compound (4-1) can lower the minimum temperature. The compound (4_2) can increase the absolute value of the dielectric anisotropy. Next, the combination of the components in the composition, the preferred ratio of the component compounds, and the combination of the components in the composition are: first component + second component, first component + second component + third component, first Component + second component + fourth component, and first component + second component + third component: fourth component, wherein preferred is first component + second component + third adulterium * ' and first component + second component + third component + fourth component. In order to increase the absolute value of the dielectric anisotropy, the ratio of the first component is preferably 5 wt% or more; to lower the minimum temperature, the ratio of the first component is preferably 50 wt% or less, more preferably 5 to 45 wt. %, especially preferably 5 to 4 〇 wt%. In order to increase the absolute value of the dielectric anisotropy, the ratio of the second component is preferably 5 wt% or more; to lower the viscosity, the ratio of the second component is preferably 50 wt% or less, more preferably 5 to 40 wt%. , especially good for 5 to 35 plus %. In order to lower the viscosity or increase the upper limit temperature, the ratio of the third component is preferably 3 〇 Wt% or more; to increase the absolute value of the dielectric anisotropy, the ratio of the third component is preferably 70 wt% or less. In order to lower the viscosity, the ratio is preferably 35 to 65 wt%. In order to lower the viscosity, the ratio is particularly preferably 40 to 60 wt%. In order to increase optical anisotropy, the proportion of the fourth component is preferably 5 wt% or more; to lower the minimum temperature, the ratio of the fourth component is preferably 5 Å. The following 'better is 5 to 45 wt%' is particularly preferably 5 to 40 wt%. Next, a preferred embodiment of the component compound will be described. Ri, R2, R3 and R4 are independently a carbon number of 2 to 12 alkenyl groups, a carbon number of K12 alkoxy group, a carbon number of 2 to i2 alkenyl group or a carbon number of 2 to 12 alkenyl groups in which any hydrogen is substituted by fluorine. 19 201022415 j2ju»pir & In order to improve the enthalpy of the purple or hot, R1 and R2 are preferably respectively, the carbon number is 12, or the absolute value of the dielectric anisotropy is raised, R and R are compared. The best are carbon number K12 hospital oxygen. In order to improve the stability of the UV heat, etc. 'R4 surface is divided into Wei 1~12 filaments; or for lowering the lower limit temperature' Rl r4 touches the Hungarian to Wei 2~12 thin base. The alkyl group is preferably a methyl group, an ethyl group, a propyl group, a butyl group, a decyl group, a hexyl group, a heptyl group or an octyl group. In order to lower the viscosity, it is more preferably ethyl, propylpentyl or heptyl. The decyloxy group is preferably a methoxy group, an ethoxy group, a propoxy group, a butoxy group, a pentyloxy group, a hexyloxy group or a heptyloxy group. In order to lower the viscosity, a more preferred one is methoxyethoxy. The alkenyl group is preferably a vinyl group, a 1-propenyl group, a 2-propenyl group, a nonylbutenyl group, a 2:butyl group, a 3·butenyl group, a 1-pentyl group, a 2-contact group, a 3-pentyl group, 4—decenyl, 1-hexenyl, 2-hexenyl, 3-hexenyl, 4-hexenyl or 5-hexenyl. In order to lower the viscosity, a vinyl group, a fluorene-propenyl group, a 3-butanyl group or a 3-pentenyl group is more preferable. The preferred stereo configuration of _CH=CH_ in the alkenyl groups depends on the position of the double bond. In order to lower the viscosity and the like, the 丨-propenyl group, the fluorene-butenyl group, the 1-pentenyl group, the 1·hexyl group, the 3-contact group, and the 3-alkenyl group of 3_hexyl are preferably trails. The alkenyl group such as 2-butenyl, 2-pentenyl or 2-hexyl is preferably cis (ds). Among these filaments, the linear one is superior to the one with the branch. Preferred examples of the alkenyl group in which any hydrogen is substituted by fluorine are 2,2-difluorovinyl, 3,3-difluoro-2-propenyl, 4,4-difluoro-3-butenyl, 5,5. _ Difluoro _4 · pentyl group and 6,6-·- hexane group. In order to lower the viscosity, a more preferable example is 2 2 -gasvinyl and 4,4-difluoro-3-butenyl. 'A 20 201022415 i2iU8pit from #环环人为卜比务2'5·二基, L4·Extension of the ring and the second base' and at least one ring is a 1-merling 2,5-diyl group. m is ~, 4 one core ^^ the same can also be ^. In order to increase the dielectric constant, the 3 and tens values of each of the rings are preferably divided into 2, 5_2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3 : Stand for 2 different. In order to reduce the viscosity, each ring B is preferably divided into two:: the same work = any two rings C can be the same or different. In order to reduce the viscosity ring ^ ^ ! is preferably divided into 1, 4_ stretch ring hexyl. Ring E, ring E, ring E2, ring FF, ring F2 are independently 1,4_extension ring hexyl or μ·extension base=time two _ may be the same or different, and 2 or 3=ring 2 may be the same Can be different. In order to reduce the optical anisotropy, the ring E, mF1 〇, each f and z3 are independently a single bond, an ethyl group, a methylene group or a carbonyloxy group, and when m*q3 is 2 or 3, the two groups may be the same or different. ,? When it is 2 or 3, the two z may be the same or different. In order to lower the viscosity, 21 and z3 are preferably classified into a ^^ bond, or to increase the absolute value of the dielectric anisotropy, 2! and z3 are classified as an anthraceneoxy group. Each Z2 is independently a single bond, an extended ethyl group or a carbonyloxy group, and when j and k are 2 or 3, both Z2 may be the same or different. In order to lower the viscosity, each z2 is preferably a single bond. X and X2 are independently fluorine or gas. In order to lower the viscosity, it is preferably fluorine. = and g are independent of 1, 2 or 3. In order to lower the lower limit temperature, m and g are preferably divided into 1; to increase the upper limit temperature, m&g is preferably divided into 2. 』I, 21 201022415 2 or 3. In order to reduce the viscosity, j is preferably ^^^^. For the lower limit temperature, k is preferably 1 < φ and q are independently 04443, but 氐 is preferably 2 for increasing the upper limit temperature 'p. In order to lower the temperature of the lower limit, ^5 is followed by the differentiation of the domain. The preferred compound '° R below is a linear alkyl group having 1 to 12 carbon atoms or a linear alkoxy group having 1 to 12 carbon atoms. Han 6 is independently a carbon number 12 linear alkyl group or a carbon number 2 to 12 linear alkenyl group. = Two upper temperature limits, among the compounds, 14_ Cyclohexyl: The type is a trans-warp. Preferably, the compound (1) is the compound (1_1_1) to the compound, and the compound (li), (1·3·υ, (1_5_υ ' is a compound ^(1-1-1) and (1) -5-1). Preferred compound (2) is a compound (2-^0, (2 2_1). Preferred compound (3) is a compound (3-Μ)~(3_10·υ, more preferably a compound ( 3-1-1), (3-3-1), (3-4-1), (3-6-1), (3-10-1), especially good & ❹ compound (3-1 · 1), (m), (3_6_υ. Preferred compound (41) is a compound (4_1-Μ)~(4-1-7-1), more preferably (4-1-1-1), (4-1-2-1), (4·1_3·1), (4-1-Φ4), (44-54), especially good compounds (4 small ^), (4·1-3_1) (4-1-5-1). Preferred > [The compound (4-2) is (4-2-1-1), (4-2-1-2), (4-2) -2-1), (4-2_3-1)~(4-2-3-5), (4-2-4-1), (4_2_4_2), and more preferably compound (4-2-1- 2), (4_2-3-1), (4-2-3-3), (4-2-4·1) ' Particularly good are compounds (4-2-1-2) and (4-2) -3-3). 22 201022415 32308pif

R

(1-1-1) (1-2-1) (1-3-1) (1-4-1) (1-5-1) (1-6-1) (2-1-1) ( 2-2-1) 23 201022415 32308pif

(3-1-1) (3-2-1)

(3-3-1) (3-4-1) (3-5-1) (3-6-1) (3-7-1) (3-8-1) (3-9-1) ( 3-10-1)

24 201022415 32308pif

(4-1-1-1) (4-1-2-1) (4-1-3-1) (4-1-4-1) (4-1-5-1) (4-1- 6-1) (4-1-7-1) (4-2-1-1) (4-2-1-2) (4-2-2-1) (4-2-3-1) ( 4-2-3-2) 25 201022415 3^3ϋ»ριί

(4-2-3-3)

F F

(4-2-3-4)

F F

(4-2-3-5) (4-2-4-1) _

F F

(4-2-4-2) Next, an additive which can be mixed in the composition will be described. Such additives are optically active compounds, antioxidants, ultraviolet absorbers, pigments, antifoaming agents, polymerizable compounds, and polymerization. An optically active compound can be produced by inducing a twist angle for inducing a helical structure of a liquid crystal

CH3 26 201022415 •5 2 times pit

(5-3)

F

e To prevent a decrease in resistivity caused by heating in the atmosphere, or to maintain a large voltage holding ratio not only at room temperature but also at a high temperature after long-term use of the element, an antioxidant may be mixed into the composition. CCCH^

CnH2n+r^^-〇H (6) c(ciy3

A preferred example of the antioxidant is a compound (6) wherein n is an integer of 1 to 9. With respect to the compound (6), η is preferably 1, 3, 5, 7 or 9' more preferably 1 or 7. Since the compound (6) having η of 1 is highly volatile, it can effectively prevent the decrease in resistivity due to heating in the atmosphere. The compound (6) having a η of 7 is small in volatility, so that the component can be effectively used after a long period of use. The large voltage holding ratio is maintained not only at room temperature but also at high temperatures. In order to obtain the effect, the ratio of the antioxidant is preferably 50 ppm or more; and the ratio of the antioxidant is preferably 600 ppm or less, more preferably 1 Torr to 300 ppm, in order not to lower the upper limit temperature or increase the lower limit temperature. Preferred examples of the ultraviolet absorber are a benzophenone derivative, a benzoate derivative, a triazole derivative, and the like. Light stabilizers such as amines having a stereoscopic barrier are also preferred. In order to obtain the effect, the ratio of the absorbent or the stabilizer is preferably 50 ppm or more, and the ratio is preferably 10000 ppm or less, more preferably 1 〇〇 1 〇〇, in order not to lower the upper limit temperature or the lower limit temperature. 〇〇ppm. Further, it is a component suitable for the Questgost (GH) mode, and a dichroic dye such as 27 201022415 323 (10) pit azo dye or anthraquinone dye can be mixed into the composition. The proportion of the pigment is preferably 〇1 to 1〇 wt%. Further, in order to prevent foaming, an antifoaming agent such as dimethyl hydrazine oil or methyl phenyl hydrazine oil may be mixed into the composition. In order to obtain the effect, the ratio of the antifoaming agent is preferably j ppm or more, and in order to prevent deterioration, the ratio of the antifoaming agent is preferably 1 〇〇〇 ppm or less, more preferably 1 to 5 〇〇 ppm. ❹ In order to be suitable for the polymer retention alignment (PSA) mode, a polymerizable compound may be incorporated into the composition, and preferred examples thereof are acrylate, methacrylate, vinyl compound, vinyloxy compound, and propenyl ether. A compound having a polymerizable group such as an epoxy compound (ethylene oxide, oxetane) or a vinyl ketone. A particularly preferred example is a derivative of acrylate or methacrylate. In order to obtain the effect, the proportion of the polymerizable compound is preferably 5% by weight or more; to prevent the display defect, the ratio is preferably 1% by weight or less, more preferably 0.1% to 2% by weight. The polymerizable compound is preferably a polymerized by ultraviolet irradiation or the like in the presence of a suitable initiator such as a photopolymerization initiator. Suitable conditions for the polymerization, the appropriate type of starting agent, and the appropriate amounts are well known to those skilled in the art and are described in the literature. For example, 'as a silk lion, Irgae, 65iTM,

IrgaCUre 184TM or Daro_1173TM (available from aba _η κ κ) is suitable for free radical polymerization. The polymerizable compound is difficult to contain (U~5 wt% of a photopolymerization agent, particularly preferably 1 to 3 wt% of a combination initiator.); a method for synthesizing a daily nuclear compound. The compound can be known. The method is synthesized, as in the following. The compound number is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The compound is synthesized by the method disclosed in Japanese Patent Laid-Open Publication No. Sho 59-176221. The compound (41 丨) and (4_1-3-1) are synthesized by the method disclosed in Japanese Patent Laid-Open Publication No. Hei. (4-2-2-1) is synthesized by the method disclosed in Japanese Patent Publication No. 5-35986. The antioxidant is a commercially available product. The n=l compound of the formula (6) is commercially available from Aldrich. The compound (6) of n:=7 is synthesized by the method described in the specification of U.S. Patent No. 3,660,505. φ The compound not described in the synthesis method can be synthesized by organic synthesis (Organic)

Syntheses, John Wiley & Sons, Inc., Organic Reactions (7) rganic Reactions, John Wiley & Sons, Inc., Comprehensive Organic Synthesis (Pergamon Press), New Experimental Chemistry Lecture (Maruzen), etc. Method to synthesize. The composition is prepared by a known method from the compound obtained in the manner described, for example, by mixing the component compounds and then heating to dissolve each other. Finally, the use of the composition will be explained. Most of the compositions have a lower limit temperature of _1 〇〇C or less, an upper limit temperature of 70 ° C or higher, and an optical ©.〇7~〇.2〇 optically different. The component containing the composition has a large voltage holding ratio. The composition is suitable for AM components, especially penetrating A1V [components. A composition having an optical anisotropy of 0.08 to 0.25 can also be prepared by controlling the ratio of the component compounds or by mixing other liquid crystal compounds. The composition can be used as a composition having a nematic phase and can be used as an optically active composition by adding an optically active compound. The composition can be used for an AM device or for a pm device. This composition can be used for an AM device and a PM device having modes such as PC, TN, STN, ECB, OCB, IPS., VA, PSA, and the like. Particularly preferred is an AM component having an IPS or VA mode of 29 201022415, which may be reflective, transmissive or semi-transmissive, preferably transmissive. This composition can also be used for amorphous dream-TFT or polysilicon-TFT elements. The composition can also be used to form a liquid crystal composition into a Nematic Curvilinear Aligned Phase 'NCAP type element, or a polymer dispersion in which a three-dimensional network polymer is formed in a composition (Polymer Dispersed) , PD) type components. [Examples] When the sample is a composition, the measurement is directly performed, and the obtained value is described. When the sample is a compound, the compound (15 wt%) is mixed into the mother liquid crystal (85 wt%) to prepare a sample, and the characteristic value of the compound can be derived from the measured value by extrapolation. (External value) = {(measured value of sample) _ 〇 · 85 χ (measured value of mother liquid crystal)} / 0.15. When the smectic phase (or crystallization) is precipitated at 25 ° C at this ratio, the ratio of the compound to the mother liquid crystal is sequentially changed to 10 wt%: 90 wt%, 5 wt%: 95 wt%, 1 wt%: 99 wt%. The value of the upper limit temperature, optical anisotropy, viscosity, and dielectric anisotropy associated with the compound can be obtained by the extrapolation method. The composition of the mother liquid crystal is as follows, wherein the ratio of each component is a weight percentage.

17. 2wt% 27. 6wt% 20. 7wt% C00-H^-0C2H5 COO—^^-oc4H9 coo~O~oca 201022415 The characteristics were measured according to the following method. Most of these methods are those described in the Japanese EISJ.ED-2521 standard. , the upper limit temperature of the nematic phase of the book (NI ' 〇C): Place the sample on the heating plate of the melting point measuring device of the micromirror, heat the product at PC/min, and measure the part of the sample. The temperature at which the nematic phase changes to an isotropic liquid. The upper limit temperature of the nematic phase is sometimes referred to as "the upper limit temperature. The lower limit temperature of the brewing nematic phase (Tc," ·· will be placed on the glass bottle for the second and second samples, at 0〇C, -10〇C, _20〇c, body c, _4〇〇c are stored in the device for 10 days and 'observe the liquid crystal phase. For example, when the sample is in the state of maintaining the nematic phase but becomes crystalline or stratified phase at _30〇c, it is recorded as S20 ° C. The lower limit temperature of the nematic phase is sometimes referred to as the "lower limit temperature". c Viscosity (volume viscosity (slot ViSC0Sity), π, 2 〇〇 c measured mPa's): The measurement is performed using an E-type rotational viscometer. Anisotropic i refractive index anisotropy, measured at 25 ° C): 589 nm light was measured using an Abbe refractometer equipped with a polarizing plate on the eyepiece. Drop the value on the main cymbal in one direction, and calculate the value of optical anisotropy in the direction of polarization and the equation for measuring the refractive index of the person who is perpendicular to ^^^^^^^. Anisotropic Ue, measured at 25 ° C): The value of the dielectric constant anisotropy of & = (4) is measured as follows. The number of hangs and 1) the 介 of the dielectric constant ε: A fully cleaned glass substrate was coated with a solution of 31 201022415 32308pif octadecyltriethoxydecane (〇.16 mL) in ethanol (2 mL). The glass substrate was rotated by a spinner and heated at 15 ° C. 1 hour. The sample was placed in a VA element of 4 pm (cell gap) 4 pm. The element was sealed with an ultraviolet curing adhesive. A sine wave (0.5 V' 1 kHz) was applied to the element, 2 seconds later. The dielectric constant ε// in the long-axis direction of the liquid crystal molecules was measured. 2) Measurement of dielectric constant (ε丄): A polyimide film was coated on a sufficiently cleaned glass substrate. After baking, the resulting alignment film is subjected to a rubbing treatment. The sample is placed in two glass substrates. A sinusoidal wave (0.5 V, 1 kHz) was applied to the device at intervals of (inter-cell gap) 9 μιη torsion angle 80. After 2 seconds, the dielectric constant ε 液晶 in the short-axis direction of the liquid crystal molecules was measured. Voltage (measured at Vth '25°C, V): The measurement was performed using an LCD 5100 luminance meter manufactured by Otsuka Electronics Co., Ltd. The light source was a halogen lamp. The sample was placed in a gap between the two glass substrates (cell gap) 4 μm, The normal-black mode VA element with the rubbing direction is anti-parallel, and the element is sealed with a UV-curable adhesive. The voltage applied to the element (60 Hz 'rectangular wave) is self-proportioned by a step of 0.02 V. V is stepwise increased to 20 V. During this time, the component is illuminated from the vertical direction, and the amount of light passing through the component is measured to produce a voltage having a transmittance of 1% in the maximum amount and a transmittance of 〇% at the minimum. - Transmittance curve. The threshold voltage is the voltage at which the transmittance becomes 忉0/. Voltage holding ratio (VHR-1, 25. (: ': The TN element for measurement has a polyimide film, and The distance between the two glass substrates (cell gap) is 5μπ^ 32 201022415 After the sample was placed in the component, the component was sealed with an ultraviolet polymerization type dopant. A pulse voltage was applied to the TN device (5 volts applied for 5 volts), and the attenuation was measured using a high speed voltmeter for 16.7 milliseconds. The voltage is obtained by calculating the area A between the voltage curve in the unit period and the horizontal axis, and the voltage holding ratio gp is a percentage of A with respect to the area B (area when it is not attenuated). Voltage holding ratio (VHR-2, 80 ° C, %): The TN device for measurement has a polyimide film, and the distance between the two glass substrates (cell gap) is 5; After the sample was placed in the component, the component was sealed with an ultraviolet polymerization type adhesive. A pulse voltage (60 microseconds applied for 5 microseconds) is applied to the TN device for charging, and the attenuated voltage is measured by a high-speed voltmeter for 16.7 milliseconds, and the area A between the voltage curve and the horizontal axis in a unit period is obtained, and the voltage is maintained. The rate is the percentage of area A relative to area B (area when not attenuated). Voltage holding ratio (VHR-3, 25 ° C, %): The voltage holding ratio was measured after ultraviolet irradiation, and the stability against ultraviolet rays was evaluated. The composition having a large VHR_3 value has high stability to ultraviolet rays. The TN element for measurement has a polyimine alignment film with a cell gap of 5/πη. The sample was injected into the element and then illuminated for 20 minutes. The light source is an ultra-high pressure mercury lamp USH-500D (USHIO electrical mechanism) with a component and light source spaced 20 cm apart. The VHR-3 was measured by measuring the decayed voltage over a period of 16.7 milliseconds. VHR-3 is preferably at least 90% or more preferably at least 95%. Voltage holding ratio (VHR-4, 25 ° C, %): The TN element coated with the sample was heated in a thermostat at 80 ° C for 500 hours, and the voltage holding ratio was measured, and the thermal stability was evaluated. Compositions having large VHR-4 values are highly stable to heat. The VHR-4 was measured by measuring the decayed voltage over a period of 16.7 milliseconds. 33 201022415 Cut υκριΐ Response time (τ, measured at 25 ° C, ms): The measurement was performed using an LCD 5100 luminance meter manufactured by Otsuka Electronics Co., Ltd., and the light source was a halogen lamp. The low pass chopper is set to 5 kHz. The sample was placed in a normally black mode VA device in which the distance between the two glass substrates (cell gap) 4//m and the rubbing direction was anti-parallel. 'The component was sealed with a UV hardening type adhesive, and a rectangular wave was applied to the element ( 60 Hz, 10 V, 0.5 second). The component is illuminated from the vertical direction and the amount of light penetrating the component is measured. When the amount of light is maximum, the transmittance is set to 100%, and the minimum transmittance is 0%. The response time is the time required for the penetration rate to change from 9〇% to ίο% (ie, fall time, falltime, milliseconds).电阻 Resistivity (p, measured at 25 ° C 'Q.cm): 1.0 ml sample was injected into a container equipped with an electrode, a DC voltage (1 〇 v) was applied to the container, and a DC current after 10 seconds was measured. Calculate the resistivity by the following formula: (resistivity) = {(voltage) X (capacitance of the container)} / {(direct current) χ (dielectric constant of vacuum)}. Scrambled phase chromatography analysis: A GC-14B gas phase chromatograph manufactured by Shimadzu Corporation was used. The carrier gas is helium (2 ml/min). The sample gasification chamber was set to 280 C, and the picker (flame ion extractor, fid) was set to 3 〇〇〇c. In the separation of the component compounds, 'Using the capillary column DB-1 manufactured by Agilent Techn〇1〇gies Co., Ltd. (length 30 m, inner diameter 0.32 mm, film thickness 0.25//m, solid solution liquid phase is methyl group polymerization) Oxygen-burning, non-polarity, the column was kept at 200 ° C for 2 minutes, and then heated to 280 ° C at a rate of 5 〇 (: / ηιίη). The sample was prepared into a wt.1 wt% acetone solution, and The sample gasification chamber was injected therein, and the recording was a C_R5A type Chromatopac manufactured by Shimadzu Corporation or its equivalent. The obtained gas chromatogram showed the residence time of the peak corresponding to the compound of the component 34 201022415 and the area of the peak. The solvent used to dilute the sample can also be used in the form of a gas-like, hexa- or the like. For the separation of the compound, the following capillary column can also be used: HP-1 manufactured by Agilent Technologies, Inc. (length 30 m, inner diameter 〇 32 mm, film thickness) 〇25//m), Rtx-1 (length 3〇m, inner diameter 〇% surface, film thickness 0.25//m) manufactured by Restek, bp-1 (length 30 m) manufactured by SGE International Pty. , inner diameter 0.32 mm, film thickness 〇.25 / / m). To prevent compound _ peak overlap, also A capillary column CBP1-M50-025 (length 50 m, inner diameter 0.25 mm, film thickness 0.25/zm) manufactured by Shimadzu Corporation was used. The ratio of the liquid crystalline compound contained in the composition can be calculated by the following method. The phase contrast meter detects the area ratio of the peaks in the gas chromatogram to the ratio of the liquid crystal compound (molar number). When using the capillary column described above, each liquid crystal compound can also be used. The correction coefficient is regarded as 1. Therefore, the ratio (wt〇/〇) of the liquid crystalline compound is calculated based on the area ratio of the peaks. The present invention will be described in detail by way of examples, but the scope of the present invention is not limited by these examples. The compounds in the comparative examples and examples are indicated by the symbols defined in Table 3. In Table 3, the stereo configuration related to ι,4_cyclohexylene is trans, and the examples are located after the symbols. The numbers in parentheses correspond to the numbers of the preferred compounds, and the symbols in (-) refer to other liquid crystal compounds. The ratio (percentage) of the liquid crystal compounds is the weight percentage of the total weight of the additives relative to the liquid crystal composition. In addition to (wt%), the liquid crystal composition contains impurities. Finally, the characteristic values of the composition are summarized. 35 201022415 Table 3. Representation of the compound using the symbol... Zn-(\n)_R , 1) Left end group R-symbol CnH2n+l - n- CnH2n+l〇~ n0_ CfflH2ra+l〇^nH2n~ mOn_ ch2=ch- V- CnH2n+1-CH=CH- nV_ CH2=CH-CnH2n- Vn- CBH2B+1-CH=CH-CnH2n- m Vn- cf2=ch- VFF- CF2=CH-CnH2n- VFFn- 2) Right end group-R' Symbol 2n+l —n ~0 C nH 2n+i -On -ch=ch2 -V -CE=CH-CaH2nH -Vn -CnH2n-CH=CH2 -nV -ch=cf2 -VFF -cooch3 -EMe 3)bonding group-Zn-symbol-C2H4- 2 -coo- E -CH=CH- V -c=c- T -cf20- X -ch2o- 10 -S«2- Si 4) Ring structure - Ar FFF C1 Cl, FFF 5) Expression symbol Η

Dh B B(F) B(5) B <2F,3F) B (2F,3C Ϊ) B (SC 13F) B (SF,5F) Cro(TF,8F)

Example 2 3-DhBeF, 3F)-02

F F 〇c2h5 Example 4 5-HBB <F)B-3

36 201022415 323U8pit [Comparative Example 1] ❹

The composition disclosed in Japanese Patent Laid-Open Publication No. Hei. Potted pepper is prepared by h, one L, plant A. (3-1-1), compound (m) and compound (3 41), and the composition and characteristics of the composition are as follows. And the most viscous 3-HDhB(2F,3F)-〇2 (1-5-1) 6% 5-HDhB(2F,3F)-02 (1-5-1) 6% 2-HHlSiB(2F,3F) -〇2 (-) 6% 3-HHlSiB(2F,3F)-〇2 (-) 6% 2-HH-3 (3-1-1) 6% 3-HH-4 (3-1-1) 10% 3-HB-02 (3-2-1) 16% 3-HB-04 (3-2-1) 4% 3-HHB-l (3-4-1) 8% 3-HHB-Ol ( 3-4-1) 5% 3-HHB-3 (3-4-1) 8% 2-HH-EMe (-) 4% 3-HH-EMe (-) 15% NI=80.4°C » Tc< -20 ° C ' Δη = 0.077," = i4 3 mPa · s, Δ ε = -1 · 4 [Comparative Example 2] Example 12 was selected from the composition disclosed in Japanese Patent Laid-Open Publication No. 2001-115161. According to the composition, the composition contains a compound (丨-丨^), a compound (1-2-1), a compound (1-5-1), a compound (34), a compound (321) 37 201022415 32308pit, and a compound (3) -4-1), and / / minimum. The composition and characteristics of the composition are as follows: 3-DhB (2F, 3F)-02 (lll) 3% 5-DhB (2F, 3F)-02 (ili) 6% 3 -Dh2B(2F,3F)-02 (1-2-1) 3% 3-HDhB(2F,3F)-01 (1-5-1) 7% 3-HDhB(2F,3F)-02 (1- 5-1) 7% 3-HH-4 (3-1-1) 12% 3-HB-02 (3-2-1) 16% 3-HB-04 (3-2-1) 8% 3- HHB-l (3-4-1) 7% 3-HHB-Ol (3-4-1) 5% 3-HHB-3 (3-4-1) 10% 2-HH-EMe (-) 6% 3-HH-EMe ( -) 10% NI=72.0°C » Tc<-20°C > Δ«=0.076 » ^==16.2 mPa * s Αε=-1.2 ° [Example 1] 3-DhHB(2F,3F)-02 ( 1-4-1) 5% 3-HDhB(2F,3F)-02 (1-5-1) 10% 5-HDhB(2F,3F)-02 (1-5-1) 7% 3-DhBB( 2F, 3F)-02 (1-6-1) 5% 5-DhBB(2F,3F)-02 (1-6-1) 5% 3-HH10B(2F,3F)-02 (2-2-1 ) 7% 4-HH10B(2F,3F)-02 (2-2-1) 6%

38 201022415 32308pif

5-HH10B(2F,3F)-02 (2-2-1) 7% V-HH-3 (3-1-1) 43% V-HHB-1 (3-4-1) 5% NI=99.0 °C - Tc<-20°C > An- =0.084,7=12.1 mPa · s Δ£=-3.4 > Vth=2.22 V » yl=41.6 mPa.s, VHR-1=99.2% VHR-2 = 98.2%, VHR-3 = 98.2%. [Example 2] 3-DhB(2F, 3F)-02 (lll) 5% 5-DhB(2F, 3F)-02 (iil) 8% 3-H10B(2F, 3F)-02 (2-1-1 10% 5-H10B(2F,3F)-02 (2-1-1) 8% 3-HH10B(2F,3F)-02 (2-2-1) 7% 5-HH10B(2F,3F)- 02 (2-2-1) 5% 2-HH-3 (3-1-1) 5% V-HH-3 (3-1-1) 30% V-HHB-1 (3-4-1) 7% 5-HBB(F)B-2 (3-10-1) 3% 5-HBB(F)B-3 (3-10-1) 3% 3-HH2Cro(7F,8F)-5 (4 -2-3-2) 3% 3-HBCro(7F,8F)-5 (4-2-3-4) 3% 3-BBCro(7F,8F)-5 (4-2-3-5) 3 % NI=71.30C, Tc<-20oC, A«=0.085,7/=13.3 mPa * s Αε=·3·4, Vth=2.20 V, yl=42.7 mPa-s, VHR-1=99.1%, VHR -2 = 98.1%, VHR-3 = 98.1%. 39 201022415 3/3U8pit [Example 3] 3-Dh2B(2F,3F)-02 (1-2-1) 9% 3-Dhl0B(2F,3F)-02 (1-3-1) 6% 3-HH10B (2F,3F)-02 (2-2-1) 6% 5-HH10B(2F,3F)-02 (2-2-1) 6% V-HH-3 (3-1-1) 32% 1V -HH-3 (3-1-1) 7% 3-HB-02 (3-2-1) 3% 1V-HBB-2 (3-5-1) 4% 2-BB(F)B-3 (3-6-1) 5% 3-HBB(2F,3F)-02 (4-1-5-1) 6% 5-HBB(2F,3F)-02 (4-1-5-1) 6 % 3-H2Cro(7F,8F)-5 (4-2-1-1) 3% 3-H10Cro(7F,8F)-5 (4-2-1-2) 4% 3-HHCro(7F,8F )-5 (4-2-3-1) 3% NI=72.4°C » Tc<-20°C > Α»=0·090,//=11.1 mPa · s △ε=-2.8, VHR· Bu 99.0%, VHR-2 = 98.1%, VHR-3 = 98.0%.痈[Example 4] 3-DhHB(2F,3F)-02 (1-4-1) 10% 5-DhHB(2F,3F)-02 (1-4-1) 5% 3-DhBB(2F,3F )-02 (1-6-1) 5% 3-H10B(2F,3F)-02 (2-1-1) 5% 5-H10B(2F,3F)-02 (2-1-1) 5% V-HH-3 (3-1-1) 40% 40 201022415 32308pii

1-BB(F)B-2V (3-6-1) 5% 3-HHEBH-5 (3-7-1) 3% V-HB(2F,3F)-02 (4-1-1-1 ) 5% 3-H2B(2F,3F)-02 (4-1-2-1) 5% 3-H2Cro(7F,8F)-3 (4-2-1-1) 3% 3-H2Cro(7F , 8F)-5 (4-2-1-1) 3% 20-Cro(7F,8F)HH-5 (4-2-4-1) 3% 3-Cro(7F,8F)2HH-5 ( 4-2-4-2) 3% NI=70.4°C » Tc<-20°C >An==0.082,;/=13.0 mPa · s △ε=-2.6, VHR_1=99.1%, VHR-2 =98.0%, VHR-3 [Example 5] = 98.0% 3-HDhB(2F, 3F)-02 (1-5-1) 10% 5-HDhB(2F, 3F)-02 (1-5-1) 4% 3-H10B(2F,3F)-02 (2-1-1) 4% 5-H10B(2F,3F)-02 (2-1-1) 4% V-HH-3 (3-1- 1) 32% 1V-HH-3 (3-1-1) 8% V2-BB-1 (3-3-1) 6% V2-HHB-1 (3-4-1) 5% 2-HBB ( 2F, 3F)-02 (4-1-5-1) 5% 3-HBB(2F,3F)-02 (4-1-5-1) 11% 2-Cro(7F,8F)2H-3 ( 4-2-2-1) 3% 20-Cro(7F,8F)2H-3 (4-2-2-1) 3% 3-HH!OCro(7F,8F)-5 (4-2-3 -3) 5% 41 201022415 32308pif NI=77.2°C, TcS-20°C, Δ«=0.088, //=11.3 mPa.s, Δε=_2.7, VHR-1=99.2%, VHR-2 = 98.2%, VHR-3 = 98.0 〇 / 〇. [Example 6] 3-HDhB(2F, 3F)-02 (1-5-1) 10% 3-HH10B(2F, 3F)-02 (2-2-1) 4% 5-HH10B (2F, 3F) -02 (2-2-1) 4% 3-HH-Ol (3-1-1) 3% V-HH-3 (3-1-1) 32% V-HH-5 (3-1-1 10% 5-HBBH-3 (3-8-1) 3% 5-HB(F)BH-3 (3-9-1) 3% 3-HB(2F,3F)-02 (4-1- 1-1) 6% V-HHB(2F,3F)-02 (4-1-3-1) 6% 3-HBB(2F,3F)-02 (4-1-5-1) 10% 3- HHB(2F,3C 1 )-02 (4-1-6-1) 4% 3-H2Cro(7F,8F)-5 (4-2-1-1) 5% NI=92.2°C » Tc<- 20°C » An=0.084,//=11.7 mPa · s Δ£=-2.8 > VHR-1=99.1% > VHR-2=98.2% > VHR-3 [Example 7] =98.2% 3- HDhB(2F,3F)-02 (1-5-1) 5% 3-HH10B(2F,3F)-02 (2-2-1) 6% 5-HH10B(2F,3F)-02 (2-2 -1) 6% 3-HHEH-5 (3) 3% 3-HH-VFF (3-1) 3%

42 201022415 32308pit

V-HH-3 (3-1-1) 30% 1V2-BB-1 (3-3-1) 4% V2-BB(F)B-1 (3-6-1) 5% 3-HHEBH- 5 (3-7-1) 3% 3-HB(2F,3F)-02 (4-1-1-1) 7% 5-HB(2F,3F)-02 (4-1-1-1) 7% 3-HHB(2F,3F)-02 (4-1-3-1) 6% 3-HH2B(2F,3F)-02 (4-1-4-1) 4% 5-HBB(2F, 3Cl)-02 (4-1-7-1) 5% 3-HH10Cro(7F,8F)-5 (4-2-3-3) 6% NI=72.2°C » Tc<-20°C > An==0.086,7/=12.7 mPa·s △ε=·2.3, VHR-1=99.0%, VHR-2=98.1%, VHR-3 [Example 8] =98.1% 3-HDhB(2F,3F) -02 (1-5-1) 10% 3-DhHB(2F,3F)-02 (1-4-1) 6% 3-H10B(2F,3F)-02 (2-1-1) 5% 5 -H10B(2F,3F)-02 (2-1-1) 5% 3-HH10B(2F,3F)-02 (2-2-1) 5% 5-HH10B(2F,3F)-02 (2- 2-1) 5% 3-BB(2F,5F)B-2 (3) 3% V-HH-3 (3-1-1) 37% 1 V-HH-3 (3-1-1) 6 % 3-HHB-l (3-4-1) 4% 3-HHB-Ol (3-4-1) 4% 43 201022415 32308pit 5-HBB(2F,3Cl)-〇2 (4-1-7- 1) 6% 101-HBBH-5 (-) 4% NI=92.1°C, TcS-20°C, ^=0.083,;/=l 1.3 mPa.s, △ε=-2·4, VHR-1 =99.1%, VHR-2=98.1%, VHR-3=98.0o/〇. The compositions of Examples 1 to 8 had a large negative dielectric anisotropy and a small viscosity as compared with the compositions of Comparative Examples 1 and 2. From this, it is understood that the liquid crystal composition of the present invention has characteristics superior to those of the liquid crystal compositions shown in Patent Documents 1 to 2. [Industrial Applicability] The liquid crystal composition of the present invention has a high upper limit temperature of the nematic phase, a low temperature of the nematic phase lower limit, a small viscosity, an appropriate optical anisotropy, a large negative dielectric anisotropy, and a large specific resistance. Among the characteristics of high stability of ultraviolet rays and high stability to heat, 'there is at least one characteristic, or an appropriate balance between at least two characteristics. Since the liquid crystal display element containing such a composition can be an AM device having a short response time, a large voltage holding ratio, a high contrast ratio, a long life, and the like, it can be used for a liquid crystal projector, a liquid crystal television or the like. [Simple description of the diagram] Reference No [Main component symbol description] None 44

Claims (1)

201022415 32308pif VII. Patent application scope: 1. A liquid crystal composition containing at least one of the compound groups in the group as the first component, and at least one compound as the second component group + 'And has a negative dielectric anisotropy, Wei Danling (1) ❹ (2) wherein R1 and R2 are independently a carbon number of 1 to 12 alkyl groups, a carbon number of ^~^ alkoxy group, a carbon number of 2 to 12 alkenyl groups or a carbon number of any hydrogen substituted by fluorine 2 to 12 Alkyl; each ring A is independently 1-pyridyl-2,5-diyl, M-cyclohexylene or 1,4_phenyl, and at least one ring is 丨·pyran·2,5_2 Each ring B is independently ΙΑ·extended cyclohexyl or 1,4-extended base; each ^ is independently a single bond, an extended ethyl group, Or a methoxy group, m and g are independently 1, 2 or 3. 2. The liquid crystal composition according to claim 1, wherein the first component is a compound selected from the group consisting of compounds of the formula (1_1) to (1-6), ^ (1-1) 45 201022415 J2iU8plt (1-3) F F (1-4) F F (1-5) F F (1-6) wherein R1 and R2 are independently a carbon number of 1 to 12 alkyl groups, a carbon number of 1 to 12 alkoxy groups, a carbon number of 2 to 12 alkenyl groups, or a carbon number of 2 to 12 alkenyl groups in which any hydrogen is substituted by fluorine. . 3. The liquid crystal composition according to claim 2, wherein the first component is at least one compound selected from the group consisting of compounds of the formulae (1-1) to (1-3). 4. The liquid crystal composition according to claim 2, wherein the first component is at least one compound selected from the group consisting of compounds of the formulae (1-4) to (1-6). 5. The liquid crystal composition according to claim 2, wherein the first component is at least one compound selected from the group consisting of compounds of the formulae (1_1) to (1-3) and is selected from the group consisting of 1-4) a mixture of at least one compound of the group of compounds of the formula (1-6). 6. The liquid crystal composition according to claim 1, wherein the second component is at least one compound selected from the group consisting of compounds of the formulae (2-1) to (2-2), 46 201022415 32308pit R R (2-1) (2-2) wherein R and R are independently a carbon number of 1 to 12 alkyl groups, carbon number i to I] alkoxy carbon number 2 to 12 alkenyl group or carbon number of any hydrogen substituted by fluorine 2 to 12 浠 base. 7. The liquid crystal composition according to item 6 of the patent application, wherein the second component of the φ is at least one compound selected from the group of compounds of the formula (2-1). 8. The liquid crystal composition according to claim 6, wherein the second component is at least one selected from the group of compounds of the formula (2-2). One of the chemical combinations 9. The liquid crystal composition according to claim 6, wherein the second component is at least one selected from the group of compounds of the formula (2-1) and selected from the compounds of the formula (2-2). a mixture of at least one of the populations. The liquid crystal composition according to the above aspect of the invention, wherein the ratio of the first component is 5 to 5 Å by weight relative to the total weight of the liquid crystal composition, and the ratio of the second component is 5 to 5 〇 weight percentage. U. The liquid crystal composition according to claim 2, further comprising at least one compound selected from the group of compounds represented by the above formula (3) as the first (3) 47 201022415 wherein R3 and R4 are independently a carbon number of 1 to 12 alkyl groups, a carbon number of 1 to 12 alkoxy groups, a carbon number of 2 to 12 alkenyl groups or a carbon number of 2 to 12 alkenyl groups in which any hydrogen is replaced by fluorine. Ring C and ring D are independently 1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene or 2, 5-difluoro-1,4-phenylene; each Z2 is independently a single bond, an ethyl or carbonyloxy group; and j is 1, 2 or 3. 12. The liquid crystal composition according to claim 11, wherein the third component is at least one compound selected from the group consisting of compounds of the formulae (3-1) to (3-10), R R R R R R R (3-1) (3-2) (3-3) (3-4) (3-5) (3-6) (3-7) (3-8) 48 201022415 32308pif F R3^O~0~O^0^"r4 (3-9) Ra-〇-O'O^〇H_R4 (3·10) wherein R3 and R4 are independently carbon number 1~12 A carbon number of 2 to 12 alkenyl groups having a carbon number of 1 to 12 alkoxy groups, a carbon number of 2 to 12 alkenyl groups or an arbitrary hydrogen group substituted by fluorine. 13. The liquid crystal composition according to claim 12, wherein 0 the third component is at least one compound selected from the group of compounds of the formula (3-1) " 14. as claimed in claim 12 The liquid crystal composition according to the above aspect, wherein the third component is at least one selected from the group consisting of compounds of the formula (3-1) and at least one selected from the group of compounds represented by the formula (3-4) a mixture of compounds. 15. The liquid crystal composition according to claim 12, wherein the third component is at least one compound selected from the group consisting of compounds of formula (3-6) and selected from formula (3-10) A mixture of at least one of the compounds in the group of table compounds. The liquid crystal composition according to claim 12, wherein the third component is at least one compound selected from the group consisting of compounds represented by formula (3-1), and is selected from the group consisting of formula (3-4) A mixture of at least one of the members of the compound of the table compound and at least one compound selected from the group of compounds of the formula (3-6). 17. The liquid crystal composition according to claim 11, wherein the ratio of the third component relative to the total weight of the liquid crystal composition is % to 7 〇 49 201022415 32308 pif by weight. 18. The liquid crystal composition according to claim 1, further comprising at least one compound selected from the group consisting of compounds of the formulae (4-1) to (4-2) as a fourth component, (4-1) (4-2) Wherein R 1 and R 2 are independently an alkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms, an alkenyl group having 2 to 12 carbon atoms, or an alkenyl group having 2 to 12 carbon atoms in which any hydrogen is replaced by fluorine; Each ring E and ring F is independently 1,4-cyclohexylene or 1,4-phenylene; each Z1 and Z3 is independently a single bond, an extended ethyl group, a methyleneoxy group or a carbonyloxy group; each Z2 is independently Single bond, ethyl or carbonyloxy; X1 and X2 are independently fluorine or chlorine; k is 1, 2 or 3; p and q are independently 0, 1, 2 or 3, but p+qS3. 19. The liquid crystal composition according to claim 11, further comprising at least one compound selected from the group consisting of compounds of (4-1) to (4-2) as a fourth component, (4-1) (4-2) wherein R1 and R2 are independently a carbon number of 1 to 12 alkyl groups, a carbon number of 1 to 12 alkoxy groups, 50 201022415 JZiU»pU a carbon number of 2 to 12 alkenyl groups or an arbitrary hydrogen group Fluorine substituted carbon number 2~12 alkenyl; each ring E and ring F are independently 1,4-cyclohexylene or 1,4-phenylene; each Z1 and Z3 is independently a single bond, an extended ethyl group, a methylene group Oxy or carbonyloxy; each Z2 is independently a single bond, ethyl or carbonyloxy; X1 and X2 are independently fluoro or chloro; k is 1, 2 or 3; p and q are independently 0, 1, 2 or 3 'but p+q<3. 20. The liquid crystal composition according to claim 18, wherein the fourth component is selected from the group consisting of formula (4-1-1) to (4-1-7) and formula (4-2-1) to ( 4-2-4) at least one compound of the compound group of the compounds, (4-1-1) (4-1-2) (4-1-3) (4-1-4) (4-1-5) (4-1-6) (4-1-7) 51 201022415 32308pit (4-2-1) (4-2-2) (4-2-3) (4-2-4) Wherein R1 and R2 are independently a C 1-12 alkyl group, a C 1-12 alkoxy group, a C 2-12 alkenyl group or a C 2-12 alkenyl group in which any hydrogen is replaced by a fluorine; E2, ring F1 and ring F2 are independently 1,4·cyclohexylene or 1,4-phenylene; Z1 and Z3 are independently a single bond, an ethyl group, a methylene group or a carbonyloxy group. 21. The liquid crystal composition of claim 19, wherein the liquid crystal composition The fourth component is at least one compound selected from the group consisting of the compounds of the formulae (4-1-1) to (4-1-7) and the formula (4-2-1) to (4-2-4). R (4-1-1) (4-1-2) (4-1-3) 52 201022415 32308pif (4-1-4) (4-1-5) (4-1-6) (4-1- 7) (4-2-1) (4-2-2) (4-2-3) (4-2-4) wherein R1 and R2 are independently a carbon number of 1 to 12 alkyl groups, a carbon number of 1 to 12 alkoxy groups, a carbon number of 2 to 12 alkenyl groups or a carbon number of any hydrogen substituted by fluorine 2 to 12 Alkenyl; ring E1, ring E2, ring F1 and ring F2 are independently 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z3 are independently a single bond, an ethyl group, a methylene group or a carbonyl group. Oxygen. The liquid crystal composition according to claim 20, wherein the fourth component is at least one compound selected from the group consisting of compounds of the formula (4-1-1). The liquid crystal composition according to claim 20, wherein the fourth component is at least one compound selected from the group of compounds of the formula (4-1-1) and selected from the group consisting of A mixture of at least one compound of the compound group of the formula (4-1-5). The liquid crystal composition according to claim 18, wherein the ratio of the fourth component is from 5 to 50% by weight based on the total weight of the liquid crystal composition. 25. The liquid composition according to any one of claims 1 to 21, wherein the upper limit temperature of the nematic phase is above 70 〇c, and the dielectric anisotropy at 1 kHz (25 〇c) ) below _2. 26. A seeding element comprising a liquid crystal composition as described.卞J Guandi 1 shows the tree that is cut by the item of interest, and it is cut as the scope of the towel. 29. If the scope of the patent application is added to the display element, the mode of operation is v, the liquid described in any one of the following: and the driving mode is the active matrix mode. Work, S mode or PSA mode 54 201022415 32308pit IV. Designated representative circle: (1) The designated representative figure of the case: None (2) The symbol of the symbol of the representative figure is simple: No. 5. If there is a chemical formula in this case, please reveal the most A chemical formula that shows the characteristics of the invention: 3 201022415 The operation mode of the liquid crystal display element in the optical device is the active matrix method. For the Chinese manual No. 98131091, the liquid crystal display element of the stomach [25], such as [24], wherein the liquid mode is VA, IPS or PSA mode, and the mode of the present invention includes the lower blue eye·· 1) The composition of the silk active compound, 2) the composition further containing an additive such as an antioxidant, an ultraviolet absorber, an antifoaming agent, etc., 3) containing the composition #AM element, 4) containing the composition And an element having a TN, ECB, 〇CB, lps, VA or pSA mode, 5) a penetrating element containing the composition, and 6) using the composition as a nematic phase composition, 7) Use of an optically active compound as the optically active composition in the composition. The composition of the present invention is illustrated in the following order. The first is the structure of the knife-forming compound in the composition, the second is the main characteristics of the component compound and the main effects of the compound on the composition, and the third is the combination of the components of the composition, the preferred ratio of the component compounds, and the basis thereof. The fourth is a preferred open/state of the component compound, a specific example of the pentaquinone component compound, six is an additive which can be incorporated into the composition, seven is a synthesis method of the component compound, and finally, the use of the composition. First, the structure of the component compound in the composition will be described. The composition β of the present invention is classified into a composition a and a composition B. The composition a may further contain other liquid crystal compounds, additives, impurities, and the like. The "other liquid crystal compound" means a liquid crystal compound different from the compound (1), the compound (2), the compound (4-1) and the compound (4-2). Such a compound is incorporated into the composition for the purpose of further adjusting the properties. Among other liquid crystalline compounds, the less the cyano compound is, the better the stability against heat or ultraviolet rays is, and the ratio is preferably 〇. The additive is an optically active compound, an antioxidant, an ultraviolet absorber, a dye, an antifoaming agent, a polymerizable compound, a polymerization initiator, and the like. The impurity is a compound or the like mixed in the step of synthesizing the compound 17 201022415 32308ρϊΠ compound. This compound is classified as an impurity even if it is a liquid crystalline compound. The composition B contains substantially only a compound selected from the group consisting of the compound (1), the compound (2), the compound (3), the compound (4-1), and the compound (4-2). The term "substantially" means that the composition may contain additives and impurities, but does not contain a liquid crystal compound different from the compounds. The composition B has a smaller number of components than the composition A. Composition B is superior to A in terms of cost reduction. The composition A is superior to B in that the physical properties can be further adjusted by mixing into other liquid crystalline compounds. Next, the main characteristics of the component compound will be described, and the main effects of the compound on the properties of the composition will be explained. The main characteristics of the component compounds are summarized in Table 2 in accordance with the effects of the present invention. In the symbols of Table 2, L means large or high, 'M means medium level, and S means small or low. The symbols l, m, and s are classified according to a qualitative comparison between the constituent compounds, and 〇 indicates that the value is close to zero. The properties of the compound of the compound 2. (2) (3) (4-1) (4-2) The temperature limit k~L _ Μ ~ LS ~ LM ~ LS ~ Μ Μ Μ ~ L Μ ~ LS ~ Μ M~LL 卑学异异Μ Μ~LS~L Μ~LM~L Dielectric anisotropy 〜~L1) Ll) 0 S ~]Μ1) Lb Resistivity LLLLLU Dielectric anisotropy The value is negative, and the box F indicates the absolute value. When the component compound is mixed into the composition, the main effects on the composition characteristics are as follows. The compound (1) can increase the absolute value of the dielectric anisotropy and lower the lower limit temperature. The compound (2) can increase the absolute value of the dielectric anisotropy and increase the optical anisotropy. Compound (3) can be lowered. The measurement of the characteristic value of 201022415 32308pitl is carried out in accordance with the following method. These methods are the methods described in the Japanese Electronic Machinery Industry Association standard EIAJ Grab 2521A, which is modified by the method. & , (4) Lower limit temperature (NI ' 〇C): Heat the sample on the hot plate of the melting point measuring device of the micromirror at a speed of loc/min*, and measure the - part of the sample by the nematic The degree when the phase changes to an isotropic liquid. Sometimes the upper limit temperature of the nematic phase is "the upper limit. temperature". /Dish 下限 The lower limit temperature of the nematic phase (Tc, .0: put the sample with the nematic phase into the glass bottle, at 0. (:, -10%, _20 meaning, ·3〇〇ε, _4〇〇 After 10 days of storage in the freezer of c, observe the liquid crystal phase. For example, when the sample maintains the nematic phase under _2〇〇c but becomes crystalline or stratified at -30〇c, Tc\ ' Hc. The lower limit temperature of the nematic phase is sometimes referred to as the "lower limit temperature". C. Viscosity (bulk viscosity, /, measured at 20 ° C, mPa's): The measurement is performed using an E-type rotational viscometer. Anisotropy (refractive index anisotropy, Δ", measured at 25 ° C): % The light was measured at a wavelength of 589 nm using an Abbe refractometer equipped with a polarizing plate on the eyepiece. After rubbing the surface of the main crucible in one direction, the sample is dropped on the main crucible, and the refractive index is measured when the polarizing direction is parallel to the rubbing direction, and the refractive index L is measured when the polarizing direction is perpendicular to the rubbing direction, and then the core is measured. Calculate the value of optical anisotropy. Dielectric anisotropy (&, 250C measurement): Calculated by the formula of & The value of the electrical anisotropy, in which the dielectric constants (~ and 匕) are measured as follows: 1) The measurement of the dielectric constant 〜 is applied to a sufficiently cleaned glass substrate 31 201022415 32308pifl cloth octadecyl 2 A solution of oxysulfuric acid (0 16 mL) in ethanol (20 mL). After rotating the glass substrate with a rotator, heating i ^ at 15 ° C. Place the sample in the gap between the two glass substrates (cell gap) The VA element of 4#m was sealed with an ultraviolet curing adhesive, and a sine wave (0.5 V, 1 kHz) was applied to the element for 2 seconds, and then the dielectric constant of the liquid crystal molecule in the long axis direction was measured. 2) Measurement of dielectric constant (ε±) ^ Coating a polyimide film on a sufficiently cleaned glass substrate. After baking the glass substrate, the resulting alignment film is subjected to a rubbing treatment. Into the two glass substrate gap "_ angle 80. In the TM component. The dielectric constant threshold voltage (Vth, measured at 25 〇 C, V) of the liquid crystal molecules in the short-axis direction was measured after 2 seconds of the device (〇·5 V, 1 kHz): The measurement was performed using Otsuka Electronics Co., Ltd. LCD type brightness meter manufactured by the company. The light source is a toothed lamp. The sample was placed in a two-glass substrate spacer (cell gap) 4 " m, a normally black mode VA element whose rubbing direction was anti-parallel, and the element was sealed with a UV hardening type adhesive. The voltage applied to the element (60 Hz, rectangular wave) is stepwise increased from step 〇.02 V to 20 V from 〇v. During this time, the components were illuminated from the vertical direction, and the amount of light passing through the elements was measured to produce a voltage-transmittance curve with a transmittance of 1% and a minimum transmittance of 0% at the maximum amount of light. The threshold voltage is the voltage at which the transmittance becomes 10%. ^ Voltage holding ratio (VHR-1 '25. (:, %): The TN element for measurement has a polyimide film, and the distance between the two glass substrates (cell gap) is 32.